Authorize.Net Payment Gateway for WooCommerce
This plugin is an addon for WooCommerce to implement a payment gateway method for accepting Credit Cards Payments By merchants via Authorize.Net Gateway
This plugin uses AIM and is light weight version of this plugin Lightweight in sense it does not use any Authorize.Net Libraries bundled with it it simply Uses HTTP POST API to pass data to payment gateway directly.
The extension is provided by Syed Nazrul Hassan and is Free